Sony CDP-CX455 Service Manual page 4

CDP-CX455
CD-TEXT TEST DISC
This unit is able to display the TEXT data (character information) written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:J-2501-126-A) is used for checking the display.
To check, perform the following procedure.
Checking Method:
1. Turn ON the power, set the disc on the disc table with the side labeled as "test disc" as the right side, close the front cover, and chuck the
disc.
2. The following will be displayed on the fluorescent indicator tube. (The display switches each time the DISPLAY button is pressed.)
Display : CD TEXT Test Disc (Album Title)
Press the · button and play back the disc.
3.
4. The following will be displayed on the fluorescent indicator tube. (If nothing is displayed, press the DISPLAY button.)
Display : 1kHz/0 dB/ L&R
Rotate l AMS L knob to switch the track. The text data of each track will be displayed.
5.
For details of the displayed contents for each track, refer to "Table 1 : CD-TEXT TEST DISC Text Data Contents" and "Table 2 : CD-
TEXT TEST DISC Recorded Contents and Display".
Restrictions in CD-TEXT Display
In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it. For details,
refer to "Table 2 : CD-TEXT DISC Recorded Contents and Display".
Table 1 : CD-TEXT TEST DISC Text Data Contents (TRACKS No. 1 to 41:Normal Characters)
TRACK
No.
1
1kHz/0dB/L&R
2
20Hz/0dB/L&R
3
40Hz/0dB/L&R
4
100Hz/0dB/L&R
5
200Hz/0dB/L&R
6
500Hz/0dB/L&R
7
1kHz/0dB/L&R
8
5kHz/0dB/L&R
9
7kHz/0dB/L&R
10
10kHz/0dB/L&R
11 16kHz/0dB/L&R
12
18kHz/0dB/L&R
13
20kHz/0dB/L&R
14 1kHz/0dB/L&R
15
1kHz/-1dB/L&R
16
1kHz/-3dB/L&R
17
1kHz/-6dB/L&R
18
1kHz/-10dB/L&R
19
1kHz/-20dB/L&R
20
1kHz/-60dB/L&R
21
1kHz/-80dB/L&R
NOTE : The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.
4
Displayed Contents
TRACK
Displayed Contents
No.
22
1kHz/-90dB/L&R
23
Infinity Zero w/o emphasis//L&R
24
Infinity Zero with emphasis//L&R
25
400Hz+7kHz(4:1)/0dB/L&R
26
400Hz+7kHz(4:1)/-10dB/L&R
27
19kHz+20kHz(1:1)/0dB/L&R
28
19kHz+20kHz(1:1)/-10dB/L&R
29
100Hz/0dB/L*
30
1kHz/0dB/L*
31
10kHz/0dB/L*
32 20kHz/0dB/L*
33
100Hz/0dB/R*
34
1kHz/0dB/R*
35 10kHz/0dB/R*
36
20kHz/0dB/R*
37
100Hz Squere Wave//L&R
38
1kHz Squere Wave//L&R
39
1kHz w/emphasis/-0.37dB/L&R
40
5kHz w/emphasis/-4.53dB/L&R
41
16kHz w/emphasis/-9.04dB/L&R